Plastic and nonmetallic article shaping or treating: processes – Disparate treatment of article subsequent to working,... – Effecting temperature change
Patent
1994-10-13
1997-04-15
Fiorilla, Christopher A.
Plastic and nonmetallic article shaping or treating: processes
Disparate treatment of article subsequent to working,...
Effecting temperature change
264322, B29C 7100
Patent
active
056206453
ABSTRACT:
A process for forming elements for use in high temperature environments includes the following steps. The process mixes metal and/or metal compounds with orthophosphoric acid and adds a filler to form a moldable material. The moldable material is dried at a temperature less than about 100 degrees to form a stable unitary mass and thereafter the temperature is increased to its "false melt" temperature. Pressure is then subjected on the element while maintaining the element at its false melt temperature for densifying the element to a preselected porosity and deforming the element to preselected final dimensions.
REFERENCES:
patent: 3804648 (1974-04-01), Birchall et al.
patent: 5415824 (1995-05-01), Barrall et al.
Crumpacker Jill E.
Dam Chuong Q.
Hester Virgil R.
Kelley Kurtis C.
Caterpillar Inc.
Fiorilla Christopher A.
Hart Frank L.
Khosla Pankaj M.
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